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Finding the Fourth Proportional to 3,792.94, 5,689.74 and 1,571.38

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Solution

The fourth proportional to 3,792.94, 5,689.74 and 1,571.38 is: 2,357.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,792.94 : 5,689.74 = 1,571.38 : x
  2. Step 2: Convert to fraction form
    3,792.94/5,689.74 = 1,571.38/x
  3. Step 3: Cross multiply
    3,792.94x = 5,689.74 × 1,571.38
  4. Step 4: Simplify right side
    3,792.94x = 8,940,743.64
  5. Step 5: Solve for x
    x = 8,940,743.64/3,792.94
  6. Step 6: Final answer
    x = 2,357.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.